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- Title
RAFT Polymerization of N-[3-(Trimethoxysilyl)-propyl]acrylamide and Its Versatile Use in Silica Hybrid Materials.
- Authors
Maçon, Anthony L. B.; Greasley, Sarah L.; Becer, C. Remzi; Jones, Julian R.
- Abstract
Reversible addition-fragmentation chain transfer (RAFT) polymerization and characterization of an alkoxysilane acrylamide monomer using a trithiocarbonate chain transfer agent are described. Poly(N-[3-(trimethoxysilyl)propyl]acrylamide) (PTMSPAA) homopolymers are obtained with good control over the polymerization. A linear increase in the molecular weight is observed whereas the polydispersity values do not exceed 1.2 regardless of the monomer conversion. Moreover, PTMSPAA is used as a macro-RAFT agent to polymerize N-isopropylacrylamide (NIPAM). By varying the degree of polymerization of NIPAM within the block copolymer, different sizes of thermoresponsive particles are obtained. These particles are stabilized by the condensation of the alkoxysilane moieties of the polymers. Furthermore, a co-network of silica and PTMSPAA is prepared using the sol-gel process. After drying, transparent mesoporous hybrids are obtained with a surface area of up to 400 m² g -1.
- Subjects
CHAIN transfer (Chemistry); POLYMERIZATION; ACRYLAMIDE; SILICA; ALKOXYSILANES; MONOMERS
- Publication
Macromolecular Rapid Communications, 2015, Vol 36, Issue 23, p2060
- ISSN
1022-1336
- Publication type
Article
- DOI
10.1002/marc.201500369